Exams › NEET › Chemistry

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

1. [Ni(NH3)6]^2+
2. [Zn(NH3)6]^2+
3. [Cr(NH3)6]^3+
4. [Co(NH3)6]^3+

Correct answer: [Cr(NH3)6]^3+

Solution

The complex [Cr(NH3)6]^3+ is an outer orbital complex because Cr^3+ has a 3d^3 configuration, and NH3 is a weak field ligand that does not cause pairing of electrons. This results in unpaired electrons, making the complex paramagnetic.

Related NEET Chemistry questions

• What is the IUPAC name of \( K_{2}\left[P t C l_{6}\right] ? \)
• The structures of \( \left[N i(C O)_{4}\right] \) and \( \left[N i\left(\left(P h_{3}\right)_{3} P\right)_{2} C l_{2}\right] \) are:
• The IUPAC name of \( \left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{4}\right]\left[\mathrm{NiCl}_{4}\right] \) is :
• Some salts, although containing two different metallic elements, give test for one of them in solution. Such salts are:
• Actinides have higher tendency to form complexes than Lanthanides, due to
• Select the correct order of ions with respect to their ionic radii.

⚔️ Practice NEET Chemistry free + battle 1v1 →